public class Exam {
    private static int x = 10;

    public static void main(String[] args) {
        Exam exam1 = new Exam();
        exam1.x++;
        Exam.x++;
        System.out.println(x);
    }

    public static void main1(String[] args) {
        System.out.println(100 % 3);
        System.out.println(100 % 3.0);
        String str = "abcd";
        str = "aa";
    }
}
